Pipe flashing for roofs



O. A. HEPF'E-S PIPE FLASHING FOR ROOFS Filed Anril 1'7 1920 rammed our.M, ea.

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Application filed April lit 12 0. Serial No. 374,675.

To all-.whom it may concern: a

Be it known that I; O'r'ro A. HEPPES, a citizen of'theUnited States,residing at Chicago, in the county of Cook and State of Illinois, haveinvcntedvcertain new and useful Improvements in Pipe Flashings forRoots, of which the following is a specification.

The invention relates to pipe flashing for roofs. v v i One of theobjects is to provide a weatherproof seamless pipe flashing for rootswhich may be seale tothe pipe at its upper edge to prevent entrance ofwater between the pipe and the protector. Another object is to provide aflashing, molded of a single piece of plastic material, which becomessoftened by application of heat at a temperature above that to which itwill be subjected in ordinary use, and while in plastic state may becemented at its upper end into close contact with the r p In theaccompanying drawingsv Fig; 1 shows a section of the flashing placedover the pipe before its upper end is cemented to the pipe. y

2 shows it in completed form.

1g. 3 shows a side elevation in reduced slze.

In all of the views the same reference f lam ers are employed toindicate similar parts. i I I In thedrawings 5 is an ordinaryroofcovcred with shingles 6. 7 is a pipe, that passes thru the roof,such as a vent stack for a dalumbing system. The flashing consists of atubular portion 8 with an integral flange part 9. The angular relationthat these parts bear to each other is dependentupon M the pitch of theroof. The flange part 9 is of-course to be overlalin with shingles ortherrOofing material on the upper side and the flange on the lower sidemust overlie the roofing material as shown. I e I The substance of,which the improved flashing is made is plastic and adhesive when heatedto a suitable temperature although relatively stable at lowertemperatures. i, a

t The device may be made of a suitable fiber base,-such as a felt sheet,incorporated with a plastic binder of a cementitious nature, such forexample as asphalt or asphalt compounds similar in character andconstituents to. that of which asphalt roofing is made but having amelting point, preferably, somewhat higher and exceeding 130 degrees-Such material may conveniently be formed into shape by use of suitablemolds andby application" of pressure. Unless subjected to temperaturesat which the composition becomes plastic and adhesive the, structure asa whole is relatively rigid, inelastic and non-adhesive. I

After the device is placed around the pipe, as shown in Fig. 1, ablowtorch 10 is applied to the upper end of the pipe part 8 and movedaround the end until the asphalt becomesevenly heated whereupon itbecomes plastic and adhesive or tacky so that it may be pressed intointimate contact with and made to closely conform to the shape of theenclosed pipe 7, as at 11, Fig 2. The material will stick tight to thepipe and prevent the entrance of wate r. This is a characteristicquality of asphalt. Neither ordinary heat or cold will have anyobjectionable effect upon the roof protector after it has been properlyinstalled.

7 The flashing vmay also be used to protect the roof around chimneys orother conduit.

7 The protector has no visible seams and being made of a durable fillerand an asphaltic adhesive will last as long as the roof.- c

Having described my invention what I claim as new and desire to secureby Letters Patent is v p 1. A flashing structure comprising a tubularportion and a flange made in a single piece of normally relativelyinelastic rigid and anon-adhesive weatherproof material which becomesplastic andcementitious upon the application of heat above extremeatmospheric temperatures. I

2. A fiashingstructure comprising a tubular portion and a flange moldedof a fiber reenforced weatherproof material which is stable" withinnormal ranges of atmospheric temperatures and which by applicatlon ofheat above extreme atmospheric temperatures becomes moldable andadhesive.

3. A flashing structure comprising a tubular body portion and a flangeintegrally formed of a fiber reenforced asphalt and being relativelynon-moldable and non-adhesive at temperatures below extreme atmosphe ictemperatures and becoming mold,

5 tively inelastic tube for surrounding said pipe and an integralobliquely disposed flange, said tube being cementitious and having itsfree end contracted about the pipe and made to adhere thereto after saidstructure is placed in position on a roof.

In testimony scribe my name.

whereof I hereunto subo'r'ro' A. HEPPES.

